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Failure of the stabilizer rear bearing bracket as a result of improper or insufficient lubrication.
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Inspection of the stabilizer aluminum yoke casting, and if any cracks are apparent, the part should be replaced before further operation of the airplane.
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Failure of the fuel shut-off control attachment at the swivel fitting.
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Inspecting tail brace rod clevises attached to the fin for cracks and replacing wherever necessary.
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Failure of strainer/carburetor attaching fittings which may be attributed metal fatigue.
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Reports of binding in the stabilizer rear support bearing and, as the link tube at the adjustment yoke is of similar construction, there is a possibility that the same difficulty may occur there.
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Immediate changes necessary in the bungee installation.
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Rib repair diagram for Piper J-3, J-4, and J-5 aircraft.
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Reported failures of the ribstitching both in the wing and control surface covering which may result in the fabric being torn from the structure while in flight.
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Rib repair diagram for Piper J-3, J-4, and J-5 aircraft.